Dreaming of your menstrual period may indicate that you have made a mistake or are experiencing some confusion in your mind. It could reflect some instability in your life. If you see yourself performing ablution after your menstrual period in the dream, it signifies a desire for self-purification. This dream urges you to be aware of your actions and encourages you to correct your mistakes.
From Imam Muhammad Ibn Seerin's Dictionary of Dreams According to Islamic Inner Traditions â entry "Menstrual period" (page 274).
Experiencing one's menstrual period in a dream means that one has committed a wrongdoing, or it could mean confusion. If a woman sees herself taking a ritual ablution thereafter in the dream, it means that she will repent for his sin and her adversities will be dispelled. If an aged woman sees herself experiencing that in the dream, it means that she will bear a son. If a widow or an unmarried woman experiences her menstrual period in a dream, it means that she will get married. If a man sees himself experiencing women's menstrual period in a dream, it means that he will commit an unlawful act, or that he lies. If he sees his wife in her period in the dream, it means that she will close herself to him, or that he will lose money in his business. (Also see Garden; Hilarity; Mirth)
Note: Islamic dream interpretation depends on the dreamer's circumstances and state. This is a general guide drawn directly from the source book.